1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207fcae4599cc3bef4130eb06ec5f19c1a8cb6c6b660df598b82cd45e9d4268f. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0b425a2-af11-47d9-b8ce-84da997b4caf.json and https://artists.proofprofile.net/proofs/artist/c0b425a2-af11-47d9-b8ce-84da997b4caf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Paz Del Río: Sonidos Suaves Para Una Total Relajación
Sonidos Reconfortantes Para Mascotas: Música Para Aliviar El Estrés
Mascotas Junto Al Fuego: Vibraciones De Música Relajante
Caricia De Truenos: Relajación En El Abrazo De La Tormenta
Bigotes Y Ondas: Música Ambiental Para Mascotas
Música Relajante De Fuego Para Relajar A Las Mascotas
Música Lofi Pacífica Para Mascotas En Un Ambiente Calmado
Melodías Suaves De Lofi Para Calmar A Las Mascotas
Paz Del Océano: Sinfonía Natural De Relajación
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a48416eac61879edecb3d8ec0d7303bf7d5b26f73377c16853f9364daba5e1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ2458698.